diff --git a/src/lisp/globals.h b/src/lisp/globals.h
index b36325fc65fdda9806ed732968df9c309ef5be47..71a65c393d304a9053bb9b98369ab7fb0b6b3e85 100644
--- a/src/lisp/globals.h
+++ b/src/lisp/globals.h
@@ -37,8 +37,6 @@ extern unsigned long binding_stack_size;
 extern unsigned long static_space_size;
 extern unsigned long control_stack_size;
 
-extern lispobj *control_stack_start;
-
 #if (defined(i386) || defined(__x86_64))
 extern lispobj *control_stack_end;
 #endif